A search at the Stylish site on "Print" reveals over 50 styles that have been crafted so far, at least some of which are directly related to better printing of target web sites. (Others are the result of a search "hit" on "print" that doesn't directly relate to actually printing of the subject web page.)

This "printing from the Web" solution is obviously a bit (or much) more for the technical "DIYers" out there, as well as being reader-based (or client-based) and rather than site-based. In fact in the comments to the subject post (don't miss these), RWW's Richard MacManus promises a site-based "print friendly" function, coming soon. Another commenter suggests an alliance with HP (NYSE HPQ) for a "Print this Post" button.